Why the Trig TX56/TX57 Series is the Smart Replacement for Aging Avionics
Now FAA AML STC Certified for Over 650 Aircraft Models!
If you’re flying with older Nav/Com radios like the KX155, KX165, or Garmin SL30, it’s time to consider a modern, certified, and highly capable upgrade path. The Trig TX56 series—now AML STC certified by both EASA and the FAA—offers a streamlined installation experience and outstanding performance.
This blog breaks down the differences between the models, what they replace, and why now is the perfect time to upgrade.
✅ TX56A – Compact, Capable Nav/Com Radios for GA Aircraft
Overview
The TX56 and TX56A are slimline Nav/Com units with built-in VOR and ILS navigation receivers. They offer the same 10-watt transmit power, but differ in channel spacing support.
Key Features
- 10-watt VHF transmit power
- Built-in VOR/LOC/GS navigation receiver
- Dual Watch—monitor two COM or NAV channels simultaneously
- Compact 33 mm (1.3″) height
- Autopilot output for NAV guidance
- Compatible with Trig TI106 CDI
- Simple, intuitive interface
- 11–33 V DC input
Replaces
- Bendix/King KX155 / KX165
- Garmin SL30
The TX56 series offers a clean replacement path with modern design and reliability.
✅ TX57A – High Power Nav/Com Solutions for High Performance Aircraft
Overview
The TX57 series mirrors the capabilities of the TX56 line but delivers 16-watt transmit power—ideal for high-performance aircraft, operations in mountainous regions, or environments where extended range is critical.
Key Features
- Same navigation functionality as the TX56 series
- Higher power transmission
- 22–33 V DC input
Replaces
- KX165A or other high-power legacy Nav/Coms
- Older 16 W installations needing modern replacements
- SL30 users requiring more range or performance
Why Upgrade
When reliability and range matter—especially in challenging airspace or for fast aircraft—the TX57 series delivers with certified compatibility and effortless installation.
🎯 Pair with the Trig TI106 CDI – Seamless NAV Guidance
The TI106 Course Deviation Indicator is purpose-built to integrate with the TX56/TX57 series.
Features include
- VOR/LOC/GS display with smooth needle response
- Slaved NAV operation with the Trig radio
- Lightweight, easy to install
- Modern build quality with high sunlight readability
Bundling the TX56 or TX57 with the TI106 ensures complete NAV guidance capability and a clean retrofit for legacy setups.
🛠 STC Simplifies Certification and Compliance
- The AML STC (Approved Model List Supplemental Type Certificate):
- Covers 650+ fixed-wing aircraft models
- Supports both VFR and IFR installations
- Includes support for autopilot integration
- Compatible with both modern and legacy VOR/ILS systems
This dramatically simplifies panel upgrades, saving you time, paperwork, and certification costs when replacing applicable legacy systems within the scope of the STC.
📞 Talk to Pacific Avionics About Your Upgrade Path
With a choice between the TX56A and TX57A variants tailored to suit different aircraft types and requirements, there’s a perfect-fit upgrade for nearly every cockpit.
Want to know which model is right for your aircraft?
👉 Contact Pacific Avionics today and let’s modernise your panel with confidence.